/*!	 curvewarp.h
**	 Header file for implementation of the "Curve Warp" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007-2008 Chris Moore
**	Copyright (c) 2012-2013 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
** === N O T E S ===========================================================
**
** ========================================================================= */

#ifndef __SYNFIG_CURVEWARP_H
#define __SYNFIG_CURVEWARP_H

#include <vector>
#include <synfig/vector.h>
#include <synfig/layer.h>
#include <synfig/blinepoint.h>

namespace synfig
{
namespace modules
{
namespace lyr_std
{

class CurveWarp : public Layer
{
    SYNFIG_LAYER_MODULE_EXT

private:
    // Parameter: (Point) origin of the warp
    ValueBase param_origin;
    // Parameter: (Real) perpendicular expansion
    ValueBase param_perp_width;
    // Parameter: (Point) start point of source
    ValueBase param_start_point;
    // Parameter: (Point) end point of source
    ValueBase param_end_point;
    // Parameter: (std::vector<BlinePoint>) spline of the warp
    ValueBase param_bline;
    // Parameter: (bool)
    ValueBase param_fast;

    Vector perp_;
    Real curve_length_;

    void sync();

public:
    CurveWarp();

    virtual bool set_param(const String &param, const ValueBase &value);
    virtual ValueBase get_param(const String &param)const;
    virtual Point transform(const Point &point_, Real *dist = NULL, Real *along = 0, int quality = 10)const;
    virtual Color get_color(Context context, const Point &pos)const;
    virtual bool accelerated_render(Context context, Surface *surface, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual bool accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    Layer::Handle hit_check(Context context, const Point &point)const;

    virtual Vocab get_param_vocab()const;

protected:
    virtual RendDesc get_sub_renddesc_vfunc(const RendDesc &renddesc) const;
};

}; // END of namespace lyr_std
}; // END of namespace modules
}; // END of namespace synfig

#endif